JPS63152675A - Electrically conductive film-forming coating solution - Google Patents

Abstract

PURPOSE:To obtain the titled coating solution for forming, on base materials such as glass or plastics, electrically conductive transparent film resistant to scratch and outstanding in adhesiveness, by homogeneously mixing in a mixed solvent a zirconium oxy acid salt, silicon alkoxide and electrically conductive substance. CONSTITUTION:The objective coating solution can be obtained by homogeneously mixing (A) a zirconium oxy acid salt (e.g., zirconium oxychloride), (B) a silicon alkoxide or its derivative [e.g., a compound of formula Si(OR)4 (R is CH3, C2H5, n-C3H7, iso-C3H7, n-C4H8, iso-C4H8, sec-C4H8 or tert-C4H8)], (C) an electrically conductive substance, and, if needed, (D) non-precipitated silica in (E) a mixed solvent made up of water and an organic solvent. This coating solution is outstanding in terms of storage for a long period, not requiring addition of fresh acid when forming coating film therewith, and also not necessitating calcination at 450 deg.C of the coating film.

Description

DETAILED DESCRIPTION OF THE INVENTION The conductive film-forming coating (1i liquid) according to the present invention will be specifically explained below.

The coating liquid for forming a conductive film according to the present invention is made of zirconium oxy Wm, silicon alkoxide or its derivative, a conductive substance, and optionally a non-sedimenting f]1 silica liquid, water iI3, and an organic solvent. )H in a mixed solvent
Each component will be explained below.

As the zirconium oxyacid, zirconium oxychloride, oxytl[zirconium, AxIf zirconium, zirconium oxyoxalate, etc. are used, and among these, zirconium oxychloride and zirconium oxynitrate are particularly preferred. Such zirconium oxyHz
is dissolved in water and organic solvents such as alcohols, and becomes acidic when water is present in the solution.

As the silicon alkoxide or its derivative, S + l- having 1 to 4 alkoxy groups having 1 to 8 carbon atoms;
1a (OR) b (a=o~3.b=1~4°a+=4.R is argyl a S j (OR>, R-a S l (OR>
The compound or condensate (5
(up to the hanging body) or in the above formula, a part of 1-1 is C1
3: Or a derivative substituted with a vinyl group or the like is used.

This one especially S! (OR>4 (wherein, R is CH
3, C2 fi5 , n and iso-C3H7, r)
-, iso-, se leaf and tert- C4 flB
A mixture of one or two or more of the compounds represented by > is preferred.

The non-precipitating silica liquid is used together with the above-mentioned zirconium oxylate and silicon alkoxide or its derivative, if necessary. When this non-sedimenting silica liquid is used in place of a part of the silicon alkoxide, the total light transmittance of the conductive coating increases and the transparency improves, and the durability of the coating is not impaired. .

The non-precipitating silica liquid used in the present invention is Si02m
Degree 2.0 weight! % (7) Aqueous solution 250, OOOG
When the sediment was centrifuged for 1 hour at
0fflff 1 part or less. Such non-sedimentation] (■ Silica liquid is produced by removing most of the alkali from the aqueous solution of aluminum silicate, and then precipitating. Growth inhibitors include ethylene glycol, N-methyl-2-pyrrolidone, morpholine, ethylene glycol monodernidel, ethylene glycol 7-methyl ether, dimethyl formamide, etc. alone or in combination. The silica liquid is used at a suspension of at least 0.54 liters.

In this non-precipitating silica liquid, 8102/'M20
It is desirable that the amount of residual alkali represented by M 4i (in the formula represents an alkali metal) is 200 or more, preferably 1000 or more.

Such a non-sedimentable silica liquid is, for example, silicon M jt
After contacting the aqueous alkali solution with a hydrogen type cation exchange resin to remove most of the jl alkali, a growth inhibitor is added,
Then most of the water is removed, or a diluent is added without removing it and the dispersion c5t! It can be manufactured by

As a dilution ^11 used for non-sedimenting ↑no1 silica solution (
Well, methanol, ethanol, 0-propertool, 1-
propatool, [1-ethanol, i-butanol, t
-Alcohols such as butanol, acid 11 esters such as methyl acetate and ethyl acetate, ethers such as diebourg ether, acetone, etc. are used alone or in combination.

The above-mentioned non-sedimenting silica liquid is described in detail in 1H Application No. 187835/1988, previously filed by the present applicant.

The 14 conductive substances used in the present invention include tin oxide,
Alternatively, conventionally known conductive materials such as antimony, fluorine, etc., doped tin oxide, indium oxide, or tin-doped indium oxide may be used. These conductive substances have an average particle size (￥0.4μHL
It is preferable that the particles be in the form of fine particles as shown below.

In addition, for full-screen copying for display mounting on CRTs, L-CDs, etc. (for practical glass, etc., which requires high transparency with low HllIi (haze)), an average particle size of 0.01 to 0.
I like the 1μγU Otsu.

In the present invention, the conductive substance used is "Conductivity 1'""Method for Manufacturing Fine Powder" (Patent Application No. 6L-5), which the present applicant previously applied.
0233) or [Tin oxide sol and method] (Japanese Patent Application No. 61-75283), it is particularly preferable to use the first conductive [1 When purchasing, add a tin compound or an indium compound to 1 column ('1) of 8 to 12 [)].
Keep it below 1. By gradually hydrolyzing the compounds in the liquid, a sol containing colloidal particles is produced, and then this sol is dried, fired, and then crushed and covered. This is the end of physical science 14).

As a starting material, a tin compound or a -ronsium compound which is 1 knot soluble in water and can be hydrolyzed in the range of p118 to 12 is used. Specifically, tin compounds such as potassium stannate and sodium stannate, or nitrate indium,
Indium compounds such as indium sulfate can be used.

An aqueous solution of a tin compound or an indium compound (hereinafter referred to as "Original Product 1") (if it contains any of the total oxides, tin, or indium (if lf), the resulting fine powder are composed of tin oxide or indium oxide, respectively; For example, by dissolving a small amount of tartarite (sake? EiM anti-sevenyl potassium) or ammonium fluoride in 12i (a raw material containing a tin compound), antimony can be added to tin oxide. In addition, it is possible to obtain (conductivity 1) 1 (conductivity 1) by dissolving a small amount of a tin compound in a raw material solution containing an indium compound. Doped conductive ↑1
I can tell you that it will work.

The conductive fine powder doped with a different element can also be prepared by impregnating tin oxide or indium oxide, which is jq as described above, with an aqueous solution containing a compound of a different element.
It can also be obtained by diagenesis.

The temperature of the tin compound or indium compound contained in the raw material liquid is generally 5 to 30
It is preferable that the amount is within the range of % by weight.

The reaction temperature for the hydrolysis step C can be arbitrarily selected usually within the range of 30 to 90'C.

After preparing the sol solution, filter the sol solution, collect the ladle, and wash the colloid particles.
, after removing the by-product salt and other ingredients with a ladle.
By drying, roughly firing, and then pulverizing, conductivity can be obtained. The fine powder obtained in this way is sintered to some extent during firing T, and the average grain size of the powder (gi is 20, 50 μrrt [α],
The sintered state can be easily released by pulverization.
The average particle size in the coating phase is approximately 0.4 by ordinary grinding means.
The electrical conductivity 1) that meets the objectives of the present invention of less than μm can be produced using fine powder.

Therefore, the fine powder thus obtained has, for example, 0.
Only a small amount of coarse particles of 8 μTrL or more are contained.

Incidentally, conductivity 1) The pulverization of one substance may be performed before mixing with other components such as zirconium oxylate, or after mixing with other components such as zirconium oxylate. Good too. The pulverization of conductive 1'F materials is conventionally
Is it possible to do it by the grinding method of Jl (for example, 7
Firearms (such as 1-lighter, phosphorus 1-mill, whole mill, three-roll mill, etc.) can be used.

As a preferable electrically conductive biological material for A2, a fine powder of acclimatized soot or oxidized soot doped with a foreign element is heat treated in an acid aqueous solution or alkaline water<'Ff solution for 1 q. 9 electrons (tin oxide).

The fine powder of tin oxide or foreign element 1 heaping soot oxide used here was fired in order to attach it to the soil, so it was fired in order to be attached to it. h
It is good to know that 1 shi 1 is given by the law;
It may be written as 'j':? in 'J method'.

1. To r7, 1) Self-coordination soot is mixed with mineral acid L: 1? An aqueous acid solution with acid A
(One side is immediately cut. 71st!) The humidity is preferably below 200'C1. The appropriate amount of acid or alkali is at least 5% by weight of the fine powder to be treated. More than 60% of the particles are 0.1 μm or less.

The above sol is usually an aqueous sol, but if necessary, some or all of the water may be replaced with a 6-organic solvent such as alcohol.
It can also be used as a 3-machine sol.

When the conductive substance subjected to jEI in this manner is a powder, it can be used as it is, or it can be used after being dispersed in water or an organic solvent.

The conductive tin oxide sol described above can be used as an aqueous sol, or a part of the water can be replaced with an organic solvent.

Examples of organic solvents used in the coating liquid I for forming a conductive film according to the present invention include methanol, ethanol, n-bu[
]/<nol, i-propertool, 0-butanol, i
-Alcohols such as butanol and t-butanol, 1w
Esters such as 1-methyl ester and i[ethyl ester, ethers such as diethyl ether, ketones such as azetone and methyl ethyl ketone, and ethylene glycol monomethyl ether may be used alone or in combination.

In the coating liquid No. 1J for forming a conductive film according to the present invention, zirconium oxynl and silicon alkoxide or its derivatives are respectively converted into ZrO2/5i02 by oxidation conversion.
(molar ratio) is 0.05 to 2.0, preferably 0.2 to 1
．． Used in the range 0 and 'cJ:'. This Z
If rO2/5i02 (-sill ratio) is less than 0.05, (
It is not preferable because the durability of the coated film is not sufficient.
On the other hand, when the ZrO/5i02C molar ratio exceeds 2.0, the adhesion of the coating to the substrate, i4, and the optical properties of the coating (to
This is undesirable because it lowers the overall light transmittance (light beams and total light transmittance).

When using a non-precipitated silica solution, the ratio of 8102 in the non-precipitated silica solution to the conversion of silicon alkoxide or its derivatives (in the non-precipitated silica solution) is 5102)/I silicon alkoxide or its derivatives is preferably 5 inches (-) or less than 9 inches. If this value exceeds 9, the transparency of the coating (↑1) will increase dramatically, or the firing degree of the coating must be set to about 300°C or higher to improve the durability of the coating. This is not preferable because new problems arise.

Even when a non-sedimenting silica solution is used, the ratio of ZrO to total 5102 is the same as when only silicon alkoxide or its derivatives are used as described above. .

1f) i In this defense, whether a non-precipitating silica solution containing a growth inhibitor is used before growth, depending on the situation, a non-precipitating silica solution without a growth inhibitor is used as After mixing silicon alkoxide or its derivative, water, and an organic solvent, the growth inhibitor may be added to the resulting mixture.

/1 (In the coating 1 solution for forming a conductive film 1'1 according to the invention, water 131 is the essence for the hydrolysis reaction of silicon alkoxide. It is preferable that it is determined according to the concentration of silicon alkoxide or its derivative during the infiltration, and the converted S!02 of 1120 and silicon alkoxide or its derivative in the mixed liquid is determined.
molar ratio f-120/S i 02 or at least 2
It is preferable that water be contained in the coating liquid in an amount equal to the above. If this value is less than 2, -
However, a film cannot be obtained because undecomposed silicon alkoxide or its derivative remains undecomposed.

Conductive coating according to the present invention (conductive 1'l material% r4 in 1 liquid)
4-Jm is M O in which the conductive substance is replaced with an oxide.
.

When expressed as M Ox / (S i 02
Preferably, the finger size is 0.5 to 5.0. If this value is less than 0.5, F? The conductivity ↑(l) of the conductive Vt film is too low, so it is not desirable.

On the other hand, if this value exceeds 5.0, the adhesion of the conductive film to the substrate (1q) [)↓ decreases, which is not preferable.

Conductivity・1 (solid content in [coating 1” liquid)) degree (conductivity i・1
Substance ÷ 7, r 02 + S i 02 > is approximately 20
If it is less than %, it can be said that it is suitable for the purpose of the present invention. However, the stability of the coating solution i'
[The product's temperature decreases and it cannot withstand long-term storage.] Moreover, if it becomes too thin, the inconvenience of having to repeat several coatings (1i operation) to obtain a film thickness of 1% can be caused, so it is practical to use about 0.1% by weight or more.

In addition, since 41 organic solvents such as water and alcohol are present in the coating rli liquid according to the present invention as described above, zirconium quaternary-sicate is dissolved in these, and the coating liquid 411 is
Shows acidity below H2. Therefore, it is not necessary to add an acid catalyst such as hydrochloric acid or nitric acid to the coating liquid for hydrolyzing silicon alkoxide or its derivative.

Next, a method for producing a coating liquid for forming a conductive film according to the present invention will be explained.

Zirconium oxy-12 salt, silicon alkoxide or its derivative, conductive material υ1, and non-precipitating silica as required are uniformly mixed in water and an organic (d) medium. On this occasion? The If solution or dispersion order is not particularly limited. For example, an aqueous solution of zirconium oxy 1FJil and an organic solvent such as alcohol may be mixed, and an alcohol solution of silicon alkoxide or its derivative may be added to the resulting mixture. J, Ku, also as above 4 [
) The liquid d may be mixed all at once. Also, during mixing, by including a surfactant [1] in the coating solution, it is possible to increase the stability of the dispersed particles.

The coating solution thus obtained is coated onto a substrate such as glass or plastic by a conventionally known method such as a spinner method, a spray method, a barcode method, a roll method, etc. . Next, if the coated film formed on the substrate is dried and cured at a temperature of room temperature to 120'C, it will be possible to form a film with excellent adhesion to the surface of the surface [4, it1] with excellent scratch sensitivity and transparency. can get. This coating was further heated to 250°C.
By firing at a temperature of about 100 ft. or less, a coating with improved durability such as alkali resistance can be obtained. Temperatures above 250'C if necessary, e.g. 500'C
It is also possible to sinter the film at a temperature higher than that.

In this way, in the present invention, it is possible to form a film with vague properties by simply drying or baking the film at a temperature of about 250'C or less, so it is possible to form a film with an ambiguous property 11, which is superior to plastics and other materials with excellent heat resistance. It is also possible to form a film on a substrate that does not have a blade.

Coating I+liquid according to the present invention onto a transparent substrate such as crow I1
] When the film is formed using silicon alkoxide or its derivative as the 5102 source, the conductive film has a total light transmittance of 90% or more, a glossiness (G value) of 190% or less, and a haze of 2% or less. Miserably jΔaki('l
Also, this conductivity 1]1 film has a surface resistance value of 105 to 109 Ω/hole and is excellent in conductivity and inol.
The coating can be applied to antistatic displays such as CRT or L-CD, glass plates for copiers, display panels for cutters, transparent digitizers, telewriting terminals, etc.

The conductive film-forming coating 4i according to the present invention contains a zirconium oxylate, silicon alkoxide or a derivative thereof, a conductive substance, and optionally a non-conductive tip. 4
Since silica is uniformly mixed in a mixed solvent consisting of water and an organic solvent, this coating liquid has excellent stability and can be stored for a long period of time. The conductive film formed on the surface of the base has excellent transparency, scratch resistance, adhesion to the base material, and durability. There is no need to add new acid to the Ii solution.

The present invention will be explained below by way of Examples, but the present invention is not limited to these Examples.

Example 1 (Preparation of conductive tin oxide sol) A raw material solution was prepared by dissolving 316 g of potassium stannate and 38.4 Si of 11[)hestone in 686 g of water.

Add the above raw material solution together with nitric acid to 1,000 tons of water heated to 50°C and under stirring for 12 hours, and add water while maintaining D)-1 in the system at 8.5. It is decomposed and the sol liquid is j'J4. After filtering the particles from this sol solution and washing to remove by-product salts, dry the powder.
Bake for 3 hours at 350'C in air, then bake at 65'C in air.
It was baked at 0'C for 2 hours to obtain 8 pieces of solid wood.

Obtained powder 400y8 potassium hydroxide aqueous solution) fl16
009 (containing KOH4CHJ), and the mixture was kept at 30'C and stirred in Santo Mill for 3 hours to obtain conductive stannous oxide.

Then, the conductive tin oxide colloid was treated with an ion exchange resin to form a dealkalized conductive tin oxide colloid (conductive 11 sol).

This dealkalized conductive tin oxide colloid contained no precipitates, had a solid content temperature of 20% by weight -C, and an average particle size of colloid particles of 0.07 μTrL-C. 87% of all particles had a ladle diameter of 0.1 μTn or less.

J3, the average particle size of the particles was measured using an ultracentrifugal particle size measuring device (CAPA-5000 manufactured by Yuyu Seisakusho), adjusting the solid content temperature in the measurement sample to 0.5% by weight, and measuring at 5000 rpm.
It was measured by centrifugal sedimentation.

(Preparation of conductive coating liquid) - [100y of Chilsilicate 2B, 112g of 25% zirconium oxynitrate aqueous solution as Zro2,
A base coating solution (liquid A) was prepared by stirring and mixing 849 parts of pure water and 824 parts of ethanol.

The above conductive 11 tin oxide sol 5609 was mixed with 1 ethanol,
In addition to 680y, stir and mix to make tin oxide dispersion (liquid B).
was prepared.

Liquid A and liquid B obtained as described above were mixed to obtain a conductive t'J coating Vli liquid.

The properties of this conductive t'+ coating 7i liquid are shown in Table 1.

Example 2 The composition of the 1A solution in Example 1 was changed to ethyl siligate 4.
0.50g, A zirconium chloride water) H solution 10y,
Methanol-butanol mixture (Φω ratio = 1) 688.
5q, pure water 1.5g, and the composition of liquid B was conductive [tin monoxide sol 562.5! ? , Conductivity was carried out using the same horn method as in Example 1, except that the methanol-butanol mixed solution was 3,187.57 ml.

Table 1 shows the properties of this conductive coating liquid I.

Example 3 In Example 1, the composition of liquid A was changed from ethyl silica 1 to
28.30tJ, 7j Zirconium oxynitrate aqueous solution (
Zr02:25 medium weight % > 55y, 137g of methylcellosolve-ethyl acetate mixture (weight - 1:1), and the composition of liquid B was conductive / i4 tin oxide sol 66.6u, methylcellosolveffiM ethyl) A coating liquid of Conductivity 14 was obtained using the same method as in Example 1 except that the kneading was performed at 1ff and 166.4y.

Table 1 shows the conductivity of this conductive f-1 coating.

Example 4 (Dispersion of conductive tin oxide fine powder) ilI! I) 316g of potassium stannate and 38.1g of tartarite were added to 686g of water.
A raw material solution was prepared by dissolving in sp.

1000 heated to 50'C and under stirring!
The above raw material solution was added to the water of JJIIL together with nitric acid over a period of 1211 yen, and the pi-1 in the system was maintained at 8.5 to avoid hydrolysis to obtain a sol solution. Colloidal particles were separated from this sol solution, washed to remove by-product salts, and then the particles were dried and calcined in air at 350'C for 3 hours, and then roughly calcined in air at 650'C for 2 hours. Conductivity meter tin oxide fine powder 1
It was.

This powder was dispersed in pure water and treated in a lint mill for 3 hours to obtain an aqueous dispersion of conductive tin oxide with an average IBt particle size of 0.2 μm and a solid content of 20% by weight.

(Conductivity ↑) Preparation of 1 coating B solution) 50 g of ethyl silicate 28, 137.8 g of A-oxy zirconium chloride aqueous solution (Zr0225mffi%), 16.8 g of pure water! ? , a mixture of ethanol 763.49 (A
1q of liquid).

Separately, a mixed solution (liquid B) of the conductive I'l tin oxide dispersion 484 and ethanol 19369 was obtained.

The Δ solution and the B solution were stirred and mixed to give a conductivity of 1 liter.

The properties of this conductive coating 4i liquid are shown in Table 1.

Example 5 (Conductivity ↑) Indium monoxide fine powder 5) Preparation of dispersion) 6
A solution was prepared by dissolving 79.9 grams of 1'l acid in 686 J of water) and 1 cum of potassium stannate (12.7 U) in a 10% by weight aqueous potassium hydroxide solution. .To 1000 g of water heated to 50°C and under stirring,
The above indium nitrate solution and potassium stannate solution were
Add it for 11 minutes, maintain I)H in the system at 11, add 4 yen of hydrated molecules, and make a sol solution of 154 yen.

Colloid ladles are separated from this sol solution, washed to remove by-product salts, and the particles are dried and calcined in air at 350°C for 3 hours, and then in air at 600'C for 2 hours. By firing, conductive indium oxide fine powder was obtained.

The powder thus obtained is dispersed in methylcellosolve,
It was treated with a lint mill for 3 hours to obtain an average particle size (Wo, 3 μm).
, a methylcellosolve dispersion (liquid) with a solid content temperature of 30% by weight was prepared.

(Preparation of conductive coating 41i liquid) 50y of ethyl silicate 40, 295U of zylnium oxynitrate aqueous solution (Zr 0225% by weight), 48g of pure water
y, mixed solution of methyl seltul 72733.57 (solution D)
was prepared. Add 8842g of Methyl Cellosolve to the above conductive indium oxide dispersion 1 (liquid A) 938y and mix well.
> and stirred to obtain a conductive coating solution.

Table 1 shows the properties of this conductive coating liquid.

Example 6 (Preparation of non-precipitated silica solution) 55% sodium silicate aqueous solution as SiO2 (
S i O2,'Na20=3mol/'7l) about 15
The non-sedimenting silica solution (9/:) was passed through a hydrogen-type cation exchange resin column at a space velocity of 5°C, and N-methyl-2-pyrrolidone was added as a growth preventive agent to this solution. Non-sedimentation ↑) Add 44.5 Sj per 100 g of silica solution, stir and mix, then use a rotary evaporator to
The mixture was heated to 80'C and most of the water was distilled off to obtain a stabilized non-precipitated 1-no-1 silica solution (Liquid C). S of this liquid
+ 02 concentration is 10% by weight, water content is 1.0 weight ω
%Met.

(Preparation of conductive coating liquid 1) Ethyl silicate 28 to 1009, oxy6-phosphate zirconium aqueous solution (Z r 022 b ffi amount”o)
112U, ethanol 939g, pure water 84! J, above C
A mixture of liquid 319 was prepared. (Liquid D).

Separately, a mixed solution of 591 U of conductive ↑' [tin chloride sol and 1773 tJ of ethanol in Example 1 was prepared (solution E), solution D and E
Stir and mix the liquid and apply the conductive coating.

Table 1 shows the volume of this conductive coating 41 liquid.

Example 7 In Example 6, ethanol was added to 1 part of the composition of liquid D.
104V, liquid C was 280V, the composition of liquid E was 840U, conductive tin oxide sol was 840U, and ethanol was 3
After setting it to 192 tJ, the same procedure as in Example 6 was carried out.
A conductive coating liquid was obtained.

The quality of t/ of this conductive coating 4fi liquid is shown in Table 1. Example 8 In Example 6, the composition of Dti was 3344y for ethanol and 2520y for C:t! J, [Back of liquid composition, conductivity 1)I tin oxide sol was changed to 30807 and ethanol was changed to 9240g, except that the conductivity and [)U coating I0 liquid was IQ.

Table 1 shows the price of this conductive 1-1 coating lithium liquid.

Example 9 Examples 1 to 8r (*) The conductive coating solution was temporarily coated on the glass at 2.00 rpm using a spin-boo, dried with 110'Cr, and then fired at 250°C. A conductive film was formed on the glass plate.

The following tests were conducted on the obtained film.

The results are shown in Table 2.

・Total light transmittance (T) and haze (HI) Computer (manufactured by Suga Testimony) ・Gloss (G value): Evaluated at a measurement angle of 60° using the gloss measurement method of NoIS K7105-81 .

・Adhesion 1/1 Test 2 A part of commercially available 12M wide cellophane tape was attached to the film, the rest was kept perpendicular to the film, and it was instantly peeled off and the presence or absence of the film on the glass was visually observed.

-Pencil hardness: Evaluated based on JIS DO202-71.

- Durability↑1 test: The following test was conducted to compare the adhesion and total light transmittance before and after the test.

■Alkali resistance↑1:15% by weight ammonia water at room temperature
201t, immersed for '1.

■Resistance to salt water ↑1: 1 in 10 wt% NaC + aqueous solution at room temperature
Immersed for 20115.

Surface resistance, measured with an electrode cell (manufactured by Yl-IP).

Procedural amendment January 12, 1988 Kunio Ogawa, Commissioner of the Patent Office +J-Example 1, Indication of the case 1985 Patent Application No. 299,686 2, Title of invention Description of coating liquid for forming conductive film Column □ 2 1 7. Contents of amendment 1) In lines 2-3 of page 8 of the specification, r(a+b=
4) Correct J to "(a-O~3, b=1-4, a+b=4, R' is an alkyl group)".

2) In the 8th line of page 9 of the circular, [, dimethylformamide, etc.] was replaced with ``, N,
N-dimethylformamide, etc.”

3) In the same document, page 10, line 18, the phrase "the entire surface of the display device" is amended to read "the front surface of the display device."

4) In the same book, page 11, line 4, "Tin oxide sol and" Correct as "tin oxide sol and".

5) In the same book, page 13, line 16, the phrase "Kanata's conductive fine powder" is corrected to "Kanata's conductive fine powder."

6) In the same book, page 15, line 13, the phrase ``part of the water in an organic solvent'' is corrected to ``part or all of the water in an organic solvent.''

7) In the same book, page 18, line 12, "amount such that ~5.0" is replaced with "~5. O (gravitational ffi ratio)"
``the amount such that '' is corrected.

8) In the circular, page 21, line 6, It says "total light transmittance 90%", Correct it to "total light transmittance 85%".

9) In the same book, same page, line 7, It says "haze 2%", Correct it to "Haze 10%".

10) In the same book, same page, line 9, It says "10-109", Correct it to "10-109".

11) Table 1 on page 30 of the same book is amended as follows.

12) Table 2 on page 33 of Domon is amended as follows.

Claims (1)

[Scope of Claims] 1) A conductive material characterized in that a zirconium oxylate, a silicon alkoxide or a derivative thereof, and a conductive substance are uniformly mixed in a mixed solvent consisting of water and an organic solvent. Coating liquid for film formation. 2) A conductive material characterized in that a zirconium oxylate, a silicon alkoxide or its derivative, a non-sedimentable silica liquid, and a conductive substance are uniformly mixed in a mixed solvent consisting of water and an organic solvent. Coating liquid for forming a sexual film.